ive found it, it has the woodruft key and pulley, but the bolts connecting the pulley to the key are missing, so basically you would need 4 bolts to use it, probably re use the ones from yours
it was taken off correctly, and its not smashed to pieces like the one in your vid,
its fairly heavy so would assume postage to be around a tenner, with £20 for the pulley and damper,
pm your address if you want it, and a mobile number and I'll send you some picks of it